Platen-press.



.NO. 642,5l5. Patented Jan. 30, I900.

F. J. HARBRlDGE.

PLATEN PRESS.

(Application filed Mar. 7, 1898.)

(No Model.) I 3 Sheets-Sheet l JMXQQM I {7 w N0. 642,!l5. Patented Jan. 30, 1900.

F. J. HARBRIDGE.

PLATEN PRESS.

(Application filed Mar. 7, 1898.)

3 Sheets-Sheet 2.

(No Model.)

QITE Q W Q Wine 5 e m5 NORRIS PETERS co, wommmmwnnmcmm a c.

m. 642m. Patented Jan. 30,1900. FLJ. HARBREDGE.

PLATEN Pmzss.

(Application filed Mar. 7, 1898.]

3 Sheets-Sheet 3.

(No Model.)

mime ww. Ila 611601:

m: mums PEIERS co, PHDYD-LIYHD, wAsmNGTON, u. c,

Haw STATES PATENT OFFICE.

FREDERICK JOHN IIARBRIDGE, OF GRAVENIIURST, CANADA.

PLATEN-PRESS.

SPECIFICATION forming part of Letters Patent No. 642,115, dated January 30, 1900. Application filed March 7,1898. $erial No. 672,927. (No model.)

To CLZZ whom it may concern:

Be it known that I, FREDERICK J OHN HAR- BRIDGE, printer, of the town of Gravenhurst, in the district of Muskoka, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Platen-Presscs, of which the following is a specification.

My invention relates to improvements in platen-presses; and the object of the invention is to provide a simple and very quickly operated platen-press which will take and deliverthe sheets in continuous succession without the necessity of handling each sheet after it is once fed; and it consists, essentially, of a platen-press provided with the upper feeding-table and combined platen and deliverytable situated normally beneath the feedingtable and designed to be operated through a system of levers to throw the sheet against the type and to remove such sheet from the type and deliver it in the manner hereinafter more particularly explained.

Figure 1 is a perspective view of a machine constructed in accordance with my invention, all the parts being omitted which are not essential to show my improved construction. Fig. 2 is a longitudinal section through the machine, showing in full lines the normal position and in dotted lines the position which the platen is caused to assume when printing. Fig. 3 is a detail of the guiding-rib bar for controlling the grippers. Fig. 4 is a longi tudinal sectional view of a part of the press.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the main frame of the machine, provided at its rear end with a cross-shaft B.

C is the bed-plate for the type, which is formed in any suitable manner and connected to the rear portion of the frame.

D is the feeding-table, which is supported at the front end on the studs (1, extending into the jaws d at the side of the table. The feeding-table D is supported at the center by a lug e, forming part of one of the side bars E E. The side bars E E are pivotally connected to the studs d at one end and to the arms F F at the opposite end.

G G are supporting-bars pivotally connected to the studs d at the front upper end and to studs 9 at the front of the base A.

ii is a cross-shaft journaled in the ends of the curved arms I I, pivotally connected at the lower end to studs J J, secured in the sides of the frame of the machine.

K K are links pivotally secured to the end of the shaft B and to pins 70 70 on the arms F. The upper end of one arm has an extension I thus converting such arm into an operating-lever.

L is the combined platen and delivery-table,which is provided with hangers l, suitably secured on the shaft H.

M is an arc-shaped jaw extending from 1111* derneath the platen when it is in its normal position.- (Shownin the drawings.) The jaw M normally straddles the pin 7t, secured in the upper end of the arm N,which is secured at the bottom to a cross-bar N, forming part of the frame of the machine. The armNhas a lateral extension at, which is designed to form a stop for the cross-shaft to control the forward downward movement of the platen when the nippers have been brought into position, as hereinafter described.

0 is a cross-bar provided with downwardly, forwardly,and inwardly extending bent ends, which are journaled in the staples o in the stationary portion of the table D.

P is a flap provided with teethp. The flap P is connected to the table at its rear end by hinges p and is supported normally by the underlying flat springs 19*.

O are stop-fingers suitably seton the rod 0 and designed to come in close proximity to.

the ends of the flat teeth 17.

Q is the nipper-rod, whichis provided with a series of teeth or nippers q. The nipperrod is pivoted in the end of the arm L, attached to or forming part of the platen L, the end of the nipper-rod being bent at each end, as shown.

Q is an L-shaped arm attached to orforming part of the rod Q. The arm Qis designed to coact with the ribs 0' and 4", forming part of the arm R, Which is pivoted at 0' on the side bars E.

S is a spiral spring connecting one end arm of the nipping-bar to a suitable portion of the platen.-

T is the gripper-rod, which is suitably journaled in the arms L and is provided with the grippers T, which are formed with U-shaped lower ends enlarged at the extremity, so as to allow of the rod passing through them. The extremity of the gripper is fastened to the grippingrod T by suitable setscrews. The upper end of the grippers are also preferably curved.

T is aspiral spring connected at one enda is a stop formed on the side of theframe A and designed to normally support the bottom end of the grooved bar.

Y is a spiral spring designed to normally hold the bottom end of the grooved bar X down upon the stop a The gripper-bar T is provided at one end with a crank end if, the end of which is designed to pass into the groove of the bar when the machine is operated, as hereinafter described.

Having now described the principal parts involved in my invention, I shall briefly describe the operation of my press. The sheet of paper to be printed is placed on the feeding-table D against the stops 0 The operatinglever F is then thrown in thedirection indicated by arrow, thereby throwing the platen-shaft H in the direction indicated by arrow, slightly tilting the platen toward the feeding-table, so that the nippers come between the teeth on the end of the feeding-table and grip the paper thereon, carrying it onto the platen and holding it thereon, the

' action of the nippers being controlled by the crank Q. By pulling the operating-lever in the direction indicated by arrow the paper is carried off from the feeding-table as the platen is caused to move rearwardly, and the platen-shaft H also rearwardly on the arc of a circle of which the studs J are the center that is to say, upon the arms I. During this movement the fulcrum k of the links K moves slightly upward as the shaft H is traversing the arc hereinbefore referred to. The face of the platen also has a peculiar movement, as the jaw M, straddling the pin '21, forms a center of constantly-increasing radius upon which the the platen turns, or, more properly, by which the front of the platen is retarded, so that the face of the platen turns as the shaft H is traversin g'the arc hereinbefore described, thus causing the platen as it approaches the bed-plate of the type to assume a position substantially parallel with the same, so that when the lever has reached the limit of the stroke (indicated by arrow) the faceof the platen, with the sheet of paper, is brought against the type and receives the impression.

In the movement of the lever in the reverse direction exactly the reverse movement of the platen takes place until the cross-shaft H is brought forwardly against the stop-arm N. The position in which the platen is shown in the drawings is that which the shaft and platen assume after starting and at the period when the nippers are about to move into position to grasp the paper between the teeth on the end of the feeding-table. The nippers as they pass toward the feeding-table are controlled by the crank Q which ascends upon the outside of the outer rib r as the crank of the platen moves downwardly, and when it has reached the position level with the top of the feeding-table the end of the crank Q simultaneously passes over the upper end of the rib r and is drawn down by the spring S upon the paper, securely gripping it upon the edge of the paper.- As the platen is caused to move rearwardly, as hereinbefore promised, the crank end t of the gripper-bar rod T, journaled in the arms L, forming part of the platen-frame, passes into the grooved bar X, thereby as the platen moves rearwardly throwing the grippers T down upon the surface, and thus holding the sheet of paper securelyin position as it moves forward to the type. When the lever F is thrown in the opposite direction, the platen has exactly the reverse movement, and the crank end If as it moves out of the grooved bar X allows the spring F to restore the grippers T to their normal position, so as to release the sheet on the platen. The crank Q, passing up over the rib 1", also serves to release the nippers of their grip upon the sheet of paper, which thereby being free is thrown by the platen into any suitable receptacle which may be provided at the front of the machine. When the lever F is pulled in the direction indicated by arrow in Fig. 1, the platen is carried upwardly and forwardly toward the type-bed. The fulcrum of the lever F being at causes the arms E, which are pivoted above the fulcrum, to move rearwardly, thus causing the feed-table to move to the position shown in dotted lines in Fig. 2; It will be seen that when the operation is reversed the feed-table is drawn upwardly and forwardly to meet the platen and carry the sheet between the platen and the nippers.

The arm X, of course, in the forward movement of the platen would assume the position shown in dotted lines in Fig. 2 when the platen is being brought against the type and would be restored to its normal position by the springT as the platen is caused to recede from the type.

What I claim as my invention is- 1. In a platen printing-press, in combina-- tion the type plate or form, the platen, the cross-shaft,and bracket supporting the platen upon the shaft, the arms suitably pivoted at the bottom on the frame and through which the cross-shaft extends, the upwardly-extending arms from the cross-shaft the rear cross-shaft and the links connected thereto and to the arms above the moving crossshaft to provide fulcrums for said arms, one of such arms being extendedinto the form of a lever for the purpose of manipulation as and for the purpose specified.

2. In a platen printing-press, in combination the type plate or form, the platen, the cross-shaft,and bracket supporting the platen upon the shaft, the arms suitably pivoted at their lower ends on the frame and at their upper ends on said cross-shaft, the upwardly-extending arms from the cross-shaft, the links pivoted to the rear of the type-plate and connected to the arms above the moving crossshaft, one of such arms being extended into the form of alever for the purpose of manipulation, the feeding-table horizontally supported with its delivery end normally above the platen and means for transferring the sheet from the feeding-table onto the platen whereby it may be held thereon and carried forward as and for the purpose specified.

3. In a platen printing-press, in combination the type plate or form, the platen, the cross-shaftand bracket supporting the platen upon the shaft, the arms suitably pivoted at the bottom on the frame and through which the cross-shaft extends, the upwardly-extending arms from the cross-shaft, the links connected to the rear cross-shaft of the frame and to the arms above the moving cross-shaft, one of such being extended into the form of a lever for the purpose of manipulation, the feeding-table provided with depending front jaws, the side bars pivotally connected at the forward end to the arms secured on the end of the movable cross-shaft and provided with a supporting-block for the feeding-table, the supporting-bars pivotally connected to the front ends of the side bars and to the bottom of the frame, the top connecting-bolts of the side bars and supporting-bars forming a support for the depending jaws of the table and means for transferring the sheet from the feeding-table onto the platen whereby it may be held thereon and carried forward as and for the purpose specified.

4. I11 a platen printing-press, in combination the type plate or form, the platen, the cross-shaft and bracket supporting the platen upon the same, the arm suitably pivoted at the bottom on the frame and through which the cross-shaft extends, means for carrying the cross-shaft on the arc of the circle of the arms, toward the type-form, and an arm secured to the frame and provided with an extension-rest for the cross-shaft as and for the purpose specified.

5. In combination, the platen and means for operating the same, arms extending from the platen, the nippers, nipper-rod journaled in the same, the yielding guide-track, means carried by said nipper-rod normally out of engagement with said track adapted to engage therewith on the forward movement of the platen to operate the nippers and the feeding-table having a flap with recesses to receive said nippers, substantially as described.

6. In a platen printing-press, in combination the type plate or form, the platen, the cross-sl1aft and bracket supporting the platen upon the shaft, the arms suitably pivoted at the bottom on the frame and through which the cross-shaft extends, the upwardly-extending arms from the cross-shaft and the links connected to the rear cross-shaft of the frame and to the arms above the moving cross-shaft, the feeding-table, the side bars thereof, pivotally supported to the front and pivotally connected at the rear to the upwardly-extending arms secured on the end of the movable cross-shaft, the arm pivoted on one side bar and provided with inner curvular ribs, the arms secured in the lower end of the platen,the Dipper-arm and nippers and crankarm on the end of the nippers designed to coact with the inner ribs on the end of the arm pivoted on the side bar and the spring connected to the arm of the rod and to a suitable portion of the platen-frame as and for the purpose specified.

FREDERICK JOHN IIARBRIDGE. Witnesses:

B. Born, II. DENNISON. 

